They will also join Jade and Nasty Nick from Big Brother, Ricardo from The Salon, Pop Idol loser Rik Waller, James Hewitt and Playboy centrefold Sarah Kozer from Joe Million-aire, who will enter a studio mansion.

The 12 contestants will battle it out, deprived of daylight for the prize of £75,000 to give to charity.

The mansion guests will have a week before public voting begins and the most popular contestant will decide which of the two least favourites gets the boot.